Rollout On Knees muscles:Rectus Abdominis, Lower Back, Deltoids auxiliary muscles:Trapezius, Pectoralis Major, Obliques, Serratus Anterior, Teres Muscles, Quadriceps, Latissimus Dorsi required:Barbell / EZ Bar / Dumbbells (2) optional:Fitness Mat fitness level:Hard exercise type:Strength exercise benefits and how to do Rollout On Knees